A friend has given me some brake calipers he got for his B6 but never fitted but he’s now sold the car. So I’ve now got B8 S4 front calipers and S4 B6 rear Calipers to go on mine and my question is do I fit b6/b7 S4 front discs and once I’ve fitted them all do I have to change any coding as they are now S4 brakes as I vaguely remember some saying something about it once.
